Tutorial: How GPR works
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    Mar 2014
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    All Types Of Treasure Hunting

    Tutorial: How GPR works

    This page is designed as a basic introduction to some of the key concepts of ground penetrating radar. Ground penetrating radar is also known as GPR, Georadar, and ground probing radar.

    A GPR system is made up of three main components:

    Control unit
    Antenna
    Power Supply

    ​GPR equipment can be run with a variety of power supplies ranging from small rechargeable batteries to vehicle batteries and normal 110/220-volt. Connectors and adapters are available for each power source type. The unit in the photo above can run from a small internal rechargeable battery or external power.

    GPR Control Unit and Antenna:

    The control unit contains the electronics which trigger the pulse of radar energy that the antenna sends into the ground. It also has a built-in computer and hard disk/solid state memory to store data for examination after fieldwork. Some systems, such as the GSSI SIR 30, are controlled by an attached Windows laptop computer with pre-loaded control software. This system allows data processing and interpretation without having to download radar files into another computer.

    The antenna receives the electrical pulse produced by the control unit, amplifies it and transmits it into the ground or other medium at a particular frequency. Antenna frequency is one major factor in depth penetration. The higher the frequency of the antenna, the shallower into the ground it will penetrate. A higher frequency antenna will also ‘see’ smaller targets. Antenna choice is one of the most important factors in survey design. The following table shows antenna frequency, approximate depth penetration and appropriate application.

    You can read the whole article here https://www.gmradar.com/technology-e...d---gpr.html#/
    Mackaydon likes this.

 

 

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